Cylinder-packing.



PATENTED APR. 21, 1908.

ll I I J. K. WILLIAMS. CYLINDER PACKING.

PATENTED APR. 21, 1908.

J. K. WILLIAMS. CYLINDER PACKING.

APPLICATION FILED JUNE 6. 1907.

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WITNESSES:

A TTORNE Y UNITED sTAT rsPATENT oFFroE.

JOHN K. WILLIAMS, OF AKRON, OHIO, ASSIGNOR OF ONE-HALF TO TIIEWILLIAMS FOUNDRY & MACHINE lOMPnNY, OF AKRON, OHIO.

CYLIN DE R-PACKIN G.

Specification of Letters Patent.

Patented April 21, 1908.

Application filed June 6, 1907. Serial No. 877,650.

v-prcsses, otherwise known as hydrostatic presses, pneumatic presses, force umps, air

})1l ll1])s,z1ll(l steam cylinders, an it relates more particularly to the cylinders of such presses and pumps and the device for holding inposition and making effective the packing used in connection with cylinders for the prevention of leakage of the gas or liquid used in the operation of the said cylinders.

The object of my invention is to provide an effective and improved means for holding and retaining the packing'used in connection with the ram or plunger and the cylinder or barrel of a press or pump.

The description of my invention hereinafter given applies more particularly to hy-.

draulic presses although it may be used in connection withother machines using a cylinder operating by means of a liquid or a gas.

Heretofore in the construction and operation of hydraulic presses an independent collar or flange has been employed to fit over the top or end of the c linder of the ress to hold the packing use to prevent eakage, said collar or flan e being fastened or held in place by means 0 bolts and nuts.

In my invention a further object is to dispense with the inde endent flan e or collar and to accomplish tiie same resu t as to the prevention of'leakage by effective and economical means.

It is well known that in the use of hydraulic presses it becomes necessary frequently to replace worn out'packing. The accomplishment of this renewal of acking has heretoforere uired considerab e time and work in the un astenin or collar, and a so the means for retaining the packing has been troublesome in the bursting and breaking'of bolts and nuts used as retainin devices and leakage has been prevente if at all, with difficulty.

In my invention a further object is to dis-' pense with the necessity of such unfastening and removing of the collar'or the flange in the renewal of packing and to provide instead thereof a device making possible the and removing of the flange expeditious removal of the worn out packing and the installation of new packing and also effectually preventing breaking, bursting and leakage.

My invention consists of a cast iron or steel base member of a press, in general outline of known construction, having a circumferential groove or grooves in the curved I Walls of the cylinder thereof into which groove or grooves is fitted packing consistin of a 'ielding rubber ring or rings, and a steeT ban or retaining ring of diameter a proximately the same as the diameter of t e cylinder of the said press all assembled and i o erating together as more particularly herea ter set forth and described.

In the accompanying drawin s Figure 1 is a cross sectional view ofaful y equipped press'showing the ram partially elevate in thecylinder; Fig. 2 is a cross sectional view of the steel band or retaining ring somewhat enlarged and showing the beveled edge of said band; Fig. 3 is a to view of the steel band or retaining ring; 1g. 4 is a cross sectional view of Fig. '3 on the line XX; F i 5 is a cross sectional view of a portion of t e press showing the relative positions of the ram, the packing and the 'retainin ring when the ram is eing inserted in t e cylinder; Fig. 6 is a cross sectional view of a ring of packing somewhat enlar ed and showing the U sha ed channel in said packing ring; Fig. 7 is a ottom view ofthe entire packing ring; Fig. 8 is a cross sectional view of Fig. 7 on the line YY.

In the accompanying drawings similar numerals represent similar parts of the mechanism of my invention. I

10 is a ring of packing; 11 is a steel band or retaining rin 12 is an opening into the cylinder throug which a liquid or gas is .driven; 13 is a circumferentia groove; 14 is the beveled or rounded shoulder of the lower endof the ram or plunger; 15 is the liquid or gas used as the power for elevating the ram; 16 is the U sha ed channel in the packing ring; 17 is one of the arms or extremities of the packing ring; 18 is the hollow openin or cored portion of the ram or plunger; an

'19 is the cylinderof the press.

In carrying into effect my invention I provide a cast 11011 or steel base member of a press of pattern and form of known construction as to its general outline, at or near the upper end or top of the barrel or cylinder of the said base member of the said press I cause to be made a circumferential groove (13) in the curved walls of the said barrel or cylinder (19) of size and depth commensurate with the size and capacity of the press. In this circumferential groove is fitted a-yielding ring of rubber or leather or some other similar material having at the base thereof a U shaped channel as shown in the accompanying drawings. When the said yielding ring or packing is placed in the circumferential groove in the walls of the cylinder of the press it is strongly flush with the walls of the cylinder and fits tight around the ram or plunger of the press when thesame is placed in the cylinder.

In order that the ram or lunger may be disposed in the cylinder'wit out displacing the packing, in my invention, I provide a steel band or ring (11) whose outer diameter is approximately the same as .the diameter of t e cylinder, which said rin serves as a sup ort or retaining wall to hol the packing in t e groove while the ram or plunger is being inserted in the cylinder. The edge or shoulder "of the lower end of the ram or lunger is somewhat beveled or rounded an this shape, together with the supporting ring as aforesaid, permits the insertion of the ram or plunger without displacing the packing, and at the same time the retaining ring is orced downward by the descending ram or plunger; the pressure of the packing being removed from the outer circumferential surface of the retaining ring said ring falls to the bottom ofthe barrel or cylinder.

When liquid or as is forced with great ressure into the cy inder through the openmgs (12) the liquid or gas ascending. between the walls of the cylinder and the outer curved surface of theram or lunger is intercepted by the packing (10) which fits tight around the ram or plunger and which is driven tighter by the force and pressure of the said liquid or gas and the rising ram or lunger.

Without departing from the spirit of my invention, instead of but one circumferential groove in the walls of the cylinder of the ress there may be two or morelof the same kind and style of grooves placed at slight 'distances a art, one above another, and each iequip e with the aforesaid ring or packing, and t e steel band or ring may be made of sufficient width to support the packing in more than one of the said grooves and the said groove or grooves may belocated at I claim 1s:

In a hydraulic press the combination wlth a base member having a cylinder therein, of

Having fully described my invention, what such distance or distances apart and at such a circumferential groove in the curved walls of-the interior of said cylinder in said press,

of a ring of packinglplaced in said circumferential groove and aving a substantially U- shaped channel upon the under side thereof, of a retaining band of approximately same diameter as-the interior of the aforesaid cylinder, and of a ram with slightly rounded shoulder, all substantially as set forth.

JOHN K. WILLIAMS.

Witnesses: c

Lor'rm M. R ssELL, J. Ross HUFFMAN. 

